kinesis

n. a type of movement in which an organism’s response is related to the intensity of the stimulation but is not oriented in any spatial direction. An organism might be more or less active according to the amount of light, temperature, or humidity. Compare taxis; tropism.

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Psychology term of the day

December 30th 2024

neurofibril

n. a fine fiber found in the cytoplasm of a neuron. It is composed of microscopic protein filaments and microtubules. Abnormal formation of neurofibrils leads to the development of neurofibrillary tangles, which are characteristic of Alzheimer’s disease. Also called neural fibril.